Mutsuo Koyama

535 total citations
40 papers, 417 citations indexed

About

Mutsuo Koyama is a scholar working on Inorganic Chemistry, Organic Chemistry and Industrial and Manufacturing Engineering. According to data from OpenAlex, Mutsuo Koyama has authored 40 papers receiving a total of 417 indexed citations (citations by other indexed papers that have themselves been cited), including 11 papers in Inorganic Chemistry, 6 papers in Organic Chemistry and 6 papers in Industrial and Manufacturing Engineering. Recurrent topics in Mutsuo Koyama's work include Radioactive element chemistry and processing (10 papers), Chemical Synthesis and Characterization (6 papers) and Nuclear Physics and Applications (5 papers). Mutsuo Koyama is often cited by papers focused on Radioactive element chemistry and processing (10 papers), Chemical Synthesis and Characterization (6 papers) and Nuclear Physics and Applications (5 papers). Mutsuo Koyama collaborates with scholars based in Japan, Poland and Russia. Mutsuo Koyama's co-authors include Toshiyuki Masuzawa, Taitiro Fujinaga, Munetsugu Kawashima, R. Matsushita, Mikio Nishida, Shizuo Tsunogai, Shinichiro Noriki, J. Takada, Takejiro Takamatsu and Hiromu Sakurai and has published in prestigious journals such as Analytical Chemistry, Coordination Chemistry Reviews and Geophysical Research Letters.

In The Last Decade

Mutsuo Koyama

38 papers receiving 375 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Mutsuo Koyama Japan 13 87 86 58 50 47 40 417
WD Johnson Australia 11 89 1.0× 83 1.0× 72 1.2× 91 1.8× 63 1.3× 25 507
M. Kawashima Japan 12 90 1.0× 86 1.0× 57 1.0× 115 2.3× 146 3.1× 28 527
Kan KIMURA Japan 9 123 1.4× 69 0.8× 38 0.7× 79 1.6× 11 0.2× 34 594
Patricia B. O’Hara United States 15 72 0.8× 108 1.3× 63 1.1× 123 2.5× 78 1.7× 28 582
J. Toole United Kingdom 11 120 1.4× 96 1.1× 76 1.3× 19 0.4× 48 1.0× 24 444
Donald R. Schreiber United States 10 45 0.5× 95 1.1× 30 0.5× 48 1.0× 96 2.0× 20 706
B. D. Holt United States 10 31 0.4× 138 1.6× 101 1.7× 64 1.3× 46 1.0× 21 448
L.W. Dennis United States 8 40 0.5× 34 0.4× 79 1.4× 48 1.0× 30 0.6× 14 538
Thomas Verheyen Australia 16 80 0.9× 203 2.4× 68 1.2× 34 0.7× 27 0.6× 28 819
F. S. Grimaldi United States 11 98 1.1× 61 0.7× 64 1.1× 17 0.3× 42 0.9× 21 486

Countries citing papers authored by Mutsuo Koyama

Since Specialization
Citations

This map shows the geographic impact of Mutsuo Koyama's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Mutsuo Koyama with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Mutsuo Koyama more than expected).

Fields of papers citing papers by Mutsuo Koyama

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Mutsuo Koyama. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Mutsuo Koyama. The network helps show where Mutsuo Koyama may publish in the future.

Co-authorship network of co-authors of Mutsuo Koyama

This figure shows the co-authorship network connecting the top 25 collaborators of Mutsuo Koyama. A scholar is included among the top collaborators of Mutsuo Koyama based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Mutsuo Koyama. Mutsuo Koyama is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
2.
Masuzawa, Toshiyuki, et al.. (1989). Compositional change of settling particles with water depth in the Japan Sea. Marine Chemistry. 27(1-2). 61–78. 60 indexed citations
3.
Masuzawa, Toshiyuki & Mutsuo Koyama. (1989). Settling particles with positive Ce anomalies from the Japan Sea. Geophysical Research Letters. 16(6). 503–506. 42 indexed citations
4.
Koyama, Mutsuo, et al.. (1983). Radioactivation Analysis of Calcareous Algae and Laminariales, and the Regularity of Distribution of Elements in the Organisms, from Bacteria to Mammals. 49(5). 1135–1141. 1 indexed citations
5.
Harada, Takeo, et al.. (1983). . NIPPON SUISAN GAKKAISHI. 49(7). 1135–1141. 1 indexed citations
6.
Koyama, Mutsuo, et al.. (1983). Preconcentration of trace elements in natural water with cellulose piperazinedithiocarboxylate and determination by neutron activation analysis. Analytical Chemistry. 55(8). 1215–1219. 19 indexed citations
7.
Hayashi, Shigeki & Mutsuo Koyama. (1983). Generalized difference equation method for overlapping Gaussian peaks. 16. 1 indexed citations
8.
Koyama, Mutsuo & R. Matsushita. (1980). Use of Neutron Spectrum Sensitive Monitors for Instrumental Neutron Activation Analysis (Commemoration Issue Dedicated to Professor Tsunenobu Shigematsu on the Occasion of his Retirement). Kyoto University Research Information Repository (Kyoto University). 58(2). 235–243. 10 indexed citations
9.
Matsushita, R., et al.. (1980). Preparation of dithiocarbamatecellulose derivatives and their adsorption properties for trace elements. Analytica Chimica Acta. 113(1). 139–147. 37 indexed citations
10.
Fujinaga, Taitiro, et al.. (1976). . NIPPON KAGAKU KAISHI. 1395–1400. 1 indexed citations
11.
Koyama, Mutsuo, Toshitaka Hori, Takejiro Takamatsu, et al.. (1976). Characterization of Sedimentsof Lake Biwa-ko by Neutron Activation Analysis.. Japanese Journal of Limnology (Rikusuigaku Zasshi). 37(1). 1–11. 1 indexed citations
12.
Kawashima, Munetsugu, Mutsuo Koyama, & Taitiro Fujinaga. (1976). Electron transfer reactions and the nature of the solvent effect on tris-toluene-3,4-dithiolates of rhenium, tungsten, molybdenum and technetium. Journal of Inorganic and Nuclear Chemistry. 38(4). 801–805. 25 indexed citations
13.
Koyama, Tadashirô, Nobuhiko Handa, Ryoshi Ishiwatari, et al.. (1973). Chemical studies of a 200 meter core sample from Lake Biwa-ko. Japanese Journal of Limnology (Rikusuigaku Zasshi). 34(2). 75–88. 2 indexed citations
14.
Tochiyama, Osamu, Mutsuo Koyama, & Taitiro Fujinaga. (1971). The Extraction of the Cesium Ion with Some Nitrophenols into Nitrobenzene. II. Homoconjugation Studies by Means of Conductivity Measurements. Bulletin of the Chemical Society of Japan. 44(11). 3028–3032.
15.
Fujinaga, Taitiro, Mutsuo Koyama, & Toshitaka Hori. (1970). The Formation and Structure of Phosphomolybdic Acids in Aqueous Solutions. Kyoto University Research Information Repository (Kyoto University). 48(4). 210–221. 6 indexed citations
16.
Fujinaga, Taitiro, Kosuke Izutsu, Mutsuo Koyama, Satoshi Okazaki, & Kazuro Tsuji. (1968). Rapid Separation of Radioactive Nuclides by the Electrolytic Chromatography. Nippon kagaku zassi. 89(7). 673–676. 3 indexed citations
17.
Koyama, Mutsuo, et al.. (1968). Photochemical behaviour of the hexachlorotechnetate(IV) ion. Coordination Chemistry Reviews. 3(2). 285–291. 13 indexed citations
18.
Fujinaga, Taitiro, et al.. (1967). Solvent Extraction and Spectrophotometric Determination of the Pertechnetate Ion with Methyl Violet. Bulletin of the Chemical Society of Japan. 40(4). 817–821. 2 indexed citations
19.
Koyama, Mutsuo. (1961). Oxidation States of Ruthenium and its Coprecipitation Behavior with Ferric Hydroxide. Nippon kagaku zassi. 82(9). 1182–1186. 1 indexed citations
20.
Ishibashi, Masayoshi, et al.. (1961). Ion exchange separation of rubidium and cesium. BUNSEKI KAGAKU. 10(2). 116–119. 3 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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